照明时间和变化的影响繁殖的生长和繁殖性能
Min Jung Lin1, Shen Chang Chang2, Li Jen Lin3
1Bachelor of Program in Scientific Agriculture, National Pingtung University of Science and Technology,, Pingtung, Taiwan.
Animal bioscience
|August 29, 2025
概括
在繁殖中逐渐减少光线延长了产卵时间,但降低了生育能力. 对于最佳的繁殖性能和利性,建议在产卵高峰后固定9小时的照明时间表.
科学领域:
- 动物科学
- 禽类科学
- 生殖生物学
背景情况:
- 光周期对鸟类的繁殖周期有很大的影响.
- 优化照明计划对于最大限度地提高的生产力至关重要.
研究的目的:
- 调查预置光周期治疗 (7小时光照与逐渐减少光照) 对繁殖的性能的影响.
- 评估高峰后光周期管理对生殖结果的影响 (可变或固定).
主要方法:
- 一个分割图的设计涉及32个和96个暴露在不同的预置光周期 (7小时的光或逐渐减少的光).
- 采用高峰后,可变 (变换时间) 或固定 (9小时光) 光周期.
- 评估了繁殖参数,包括产卵时间,卵产量,生育能力和化能力.
主要成果:
- 与7小时照明 (P7H) 组相比,逐渐减少的光线 (GDL) 导致产卵时间明显长 (243. 75 vs 191. 75天).
- 虽然每只的GDL产卵量有所增加,但其生育率和化能力显著下降.
- 在产卵前12小时的照明时间增加了产卵时间和产卵量.
结论:
- 产卵前12小时的照明可以提高产卵时间和蛋的产量.
- 建议在产卵高峰后固定9小时的照明时间 (9L:15D),以提高生育能力和化能力,从而优化利能力.
相关概念视频
01:11Testing a Claim about Mean: Known Population SD
2.8K
A complete procedure of testing the hypothesis about a population mean is explained here.
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...
Estimating a population mean requires the samples to be distributed normally. The data should be collected from the randomly selected samples having no sampling bias. The sample size needed to be higher than 30, and most importantly, the population standard deviation should be already known.
In most realistic situations, the population standard deviation is often unknown, but in rare circumstances, when it...
2.8K
02:27Background and Environment Affect Phenotype
6.7K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.7K